Railway-switch structure.



, ED grams PATENT OFFIQE.

HARRY MILLER, OF CHICAGO, ILLINOIS, ASSIGNOR TO BUDA COMPANY, OF CHICAGO,

ILLINOIS, A CORPORATION.

Specification of Letters Yatent.

RAILWAY-SWITCH --STRUCTURE.

Patented Oct. 31, 1911.

Application filed April 21, 1911. Serial No. 622,624.

To an 'uiho'm it concern:

Be it known that I, HARRY L. MILLER, a

citizen of the United States, and a resident of Chicago, county'of Cook, and State of Illinois, have invented certain new and useful Improvements in Railway-Switch Structures, of.which the following is afull, clear,

- and exact description.

of the switch tongue and for taking up the wear of the heel, said improved means being more particularly applicable to ,pinless switches in. which the heel of the tongue, is enlarged and pivotally mounted orj ournaled in'the body of the switch structure.

. The inventionvconsists inTt-he features of improvement hereinafter set forth, illus-' trated in the preferred forni in' the accompanying drawing and more particularly poi nted. out in the appended claims.

In the drawing, Figure 1 is. a'plan view of the rear end of a structure embodying the present invention. Fig. 2 is a section on the line 2-2 of Fig. 1. .Fig. 3 is a section on the lines 3-3 of Figs. 1 and 2.

The body of the switch structure is formed in any suitable manner; In the construction shown, the body part is formed of cast steel and is provided with the usual tread' and-guard surfaces on opposite sides Ito ofthe flange-ways 10 and 11 which aline respectively with the fiangeways of the main 86 'and branch tracks. The bodypart. is provided with vertical side flan es or webs '12 and 13 which extend longitudinally beneath the tread surfaces for the main and branch tracks and are provided at theirlower edges.

with base flanges 14. The webs 12 and 13 are connected on opposite-sidesof the heel of the tongue by transverse webs 15 and 16 between which theside flange or web 13 is projected laterally beyond the tread surfaces for the main track. 1

''The body part is provided with a suitable bed .17for the switch tongue 18 and the latteris provided with an enlarged,

offset, circularheel '19 which is seated or journaled within a correspondingly shaped recess 20 formed in the upper portion of the switch structure. The'enlarged heel 19 extends on opposite sides of the main track fiangeway 10 and is provided with a groove s5 this fiangeway. The enlarged heel 19 and 21' extending across its face in line with tends a horizontal bolt 31;

thecircular recess 20 form a journal bearmg for the tongue that holds'the latter against both lateral andlongltudinal move 'ment and provides a large bearing surface which reduces the wear at the tongue heel.

The portion 17 of the switch tongue bed forms the floor of the recess 20 and is provided with a rectangular opening 22 therein.

A lug 23 depending from the tongue heel extends loosely from the opening 22. This depending lug is arranged at the rear of the center of the circular tongue heel and, at its lower end, is provided with a forwardly projecting toe portion having acurved toe portion 2% having a curved upper surface 35.

A crank shaft 26 extends transversely a through the switch structure below the bed I of the tongue and in front of the depending lug 23. This shaft is journaled at its ends in suitable openings 27 and 28 formed in the 24 on the depending lug 23. The rear end portion of the offset 29 is preferably cylindrical, as lndlcated in Fig. 3, and is some- 'what larger than the shaft 26, the parts being soarranged that when in the position shown, the center of the rear end of the offset 1s slightly above the center or axis of rotation of the shaft 26. By reason of this arrangement, pressure exerted on the shaft tending to rotate it and turn the offset downwardly, will cause the offset to press downwardly and rear'wardly on the curved face 25 of the lug 23 and thus press the tongue heel downwardly and V rearwardly t-o hold the tongue heel down and take up wear upon its bearing. The offset 29' is preferably formed in one piece withtheishaft 26 and the opening28 in the side web 13 is shaped to correspond to the outline of the ofiset 29, so that the parts may be readily assembled. The end of the crank shaft 26 outside of the side web 13 is provided-with an upwardly projecting crank arm 30 having an opening in its upper end through which ex- The head end of this boltalso extendsthrough-a. lug 32 which projects laterally from the side of the switch structure adjacent the crank arm So; The lug 32 is provided with a slot 33 to re ceive the-bolt-and-witi: a in one face fltvhich receives the head. of the bolt and holds it against turning, A sprin 35 coiled about the bolt 31 extends between the upper end of thecrank'arm 30 and an adjustin nut 36 threaded upon the end of the bold.

The pressure of thespring 35 upon the end of the crank arm tends to rotate the shaft" 26 and press the offset -29 against the lug 23, to hold down-the tongue heel and take up.

. shift of the-switch tongue. The arm 30 on thecrank shaft is located within a box 37 which is bolted upon the side ofthe switch structure and provided with a. cover 38, so that the hold-down devices are readily ac-- cessible in ease'it becomes necessary to adjust the tension .of the spring 35 by means of the nut '36 or to. permit the removal of the tongue by releasing vices. j

It is obvious that numerous changes may be made in the detailsset forth without dethe hold-do'wn dc parture from the essentials of the inventionas defined in the claims.

I claim as my invention 1. In a pinless railway. switch, the combination of a-tongue, a body part having a recess whereinthe heel -of .the -tongue is" journaled with an opening Yinithe floor or alug at its said recess, said tongue having,

heel depending through. sai :opening,"a

transverse crankshaft journaled at its ends in said body par-heard shaffihaving an off; set projection engaging said lug and a"cr anl arm and'ad-justing ands'ecuringmeans engaging said crank arm, substant1ally' 'as d'e-iscribed. Y

2. Ina pinlss'railway switcg the cembi nation of a tongue, a body pai't having a recess wherein theheelof thetongueiisjournaled Wltl'lhIl opening the floorof said recess, saidtongue'having'a lug. at its heel depending through said opening, a:.

transversecrankshaft journaled at its ends in said'body' part, said shafthavingan off set projection engaging saidjlug anda' crank arm, a spring engaging said crank arm, and means for' adjusting said vsuhstfam .tially as described; 7

. 3. Ina 'pinless railway the-.combi-, nation of 'atongue, a body parthavingja recess wherein the-heel," 6f the tongue is journaled withan opening -in; the floor of said recess, -said'tongue having ajlug. at .heel depending t hrough said opening, a

transverse .cranks'haft-journaled. at itsends set projectionengaging said lug and a crank arm, said body parei avm ai. lug adjacent I the end of said'crank arm, a'bolt extending through said lug and-arm, anda spring on said bolt engaging said arm, substantially 'as described. I

4. In apinless railway switch, the co'mbi-x nation of a tongue having anenlarged c'1rcular' heel, a body .part having a recess wherein said hr .i is journ'aled with an open-- ingin the floor of said recess, said tongue having a lugat its heel extending downs wardly'through said-opening and having a.

forwardly projecting toe at'the lower. end,

a transverse rock shaft in front of'said projection and below the tongue bed and joinnaled at its ends in said body part, said shaft having an ofiset engaging'the toe of said lug and a crank arin, and. adjust-able means engaging said arm, whereby the tongue heel is pressedrearwardly and downwardly, substantially as'described' In a pinless railway switch, the eombination of a tongue having an enlarged circular heel, a-body part having a recess -wherein said heel is journaled with an open ing in the floor of said recess, said tongue having a' lug at its heel extending downwar dly through said opening and having a forwardly projecting toe at the lower end, a transverse rock shaft in front ofsaid projection and below thetongue bed and jour-- I .naled at its ends in .saidbody part, said 'shaft having an offset engaging the toe of said lug, a crank arm at the side of the body part and'a'rearwardly extending offset engaging the toe ofsaidprojection at a point in I line withl'the center of motig g of the tongue, and an adjustablespringlengaging said crank arm, substantially as described.

6. In a pinless railway switch, the combifnation ofla tongue having an enlarged ciricular! heel, a body partjhavmg a recess 'wherein said heel is journaled'with an openng gm the floor of .wardly through said} opening forwardly rOjecting'toe-at the lower end,

a transverse. rock shaft front of said pro- H jection-and below .the tongue .bed and journaled at its ends in [said body ,part, said shafthavingan ofi'set engaging the toe of '10:: said recess said tongue havmg a lug at its heel extending downand having a.

said lug, a, crank arm at the side of the body part and a 'rearwardly extending; ofi'set, en-

fgagingthe toe of said 'projectiomfsaid fofi'setf and :toe' having rounded faces abutting at a point in line with jthej center.- ofmotion jof.--. said tongue; and means for adjusting and securing said crank arm,-substantially as de ifi fs'cribed. L E -T ILL R:

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